Vulnerability details
CVE-2026-42930
F5 BIG-IP
Appliance mode iControl REST vulnerability
CVSS 4.0
8.5High
Official description
When running in Appliance mode, an authenticated attacker assigned the 'Administrator' role may be able to bypass Appliance mode restrictions on a BIG-IP system. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.5High | 4.0 | CVEProject cvelistV5 (CNA) (f5) | CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N |
| 8.7High | 3.1 | CVEProject cvelistV5 (CNA) (f5) | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| F5 | BIG-IP | 16.1.0 ≤ v | CVEProject cvelistV5 (CNA) |
| F5 | BIG-IP | 17.1.0 ≤ v < 17.1.3.2 | CVEProject cvelistV5 (CNA) |
| F5 | BIG-IP | 17.5.0 ≤ v < 17.5.1.6 | CVEProject cvelistV5 (CNA) |
| F5 | BIG-IP | 21.0.0 ≤ v < 21.0.0.2 | CVEProject cvelistV5 (CNA) |
References and advisories
1- https://my.f5.com/manage/s/article/K000160876 vendor-advisorypatch
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Details
- Published
- 2026-05-13
- Last updated
- 2026-05-14
- State
- Published
- Assigner (CNA)
- f5
Exploit prediction (EPSS)
0.48%
Probability of exploitation in 30 days
41.6%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-35Path Traversal: '.../...//'